Briere flew with the team to Florida (scheduled father/son trip). Considering he was diagnosed with a concussion, to me, says doctors felt comfortable enough that it isn't to the point where it was felt flying should be prevented. I'm not sure there's a strong correlation between flying and a concussion but turbulence or changes in pressurized cabins can be uncomfortable for even head colds.
JVR, who didn't travel to Florida, was reported to be "progressing" yesterday but that can mean anything with concussions.
True, but he needs to stay active - if he intends to play the year through that cam he needs to pretty much use it everyday - it's a crappy injury.
Stationary bike or something like it would probably be good enough. Nothing strenuous, just enough to keep the joint moving. Point being that it would still afford him okenty of restf or his other injuries.